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H. S. LOCKMAN.

" 'PUMR No. 593,809. y Patented Nov. 16, 1897.

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UNrrnn STATES' .i ATENT union.

HENRY S. LOCKMAN, OF CASTLETO-N, NEW YORK.

PUMP.

SPECIFICATION forming part ef Letters Patent No. 593,809, dated November 16, 1897. f Application filed January 9, 1896. Serial No. 574,836. (No model.)

To @ZZ whom t may concern: l

Be it known that I, HENRY S.y LocKMAN, of Castleton, county of Richmond, State of New York, have invented a certain new and useful Improvement in Pumps, of which the following is a specification. i

This invention involves a construction for a pump requiring but few parts and producing a pump adapted to lift and discharge large volumes of liquid.

I will describe a pump embodying the features of my invention, and then point out its novelty in a claim.

In the accompanying drawingsfFigure l is a plan view of a pump embodying my invenY tion.

same.

Similar letters of reference designate corresponding parts in both figures.

The casing of the pump is in the present instance shown as consisting of an upper part A, constituting the piston-chamber, and a lower part B, constituting the supply-chamber. The parts of the casing may be secured together by bolts, as shown, or by other fastening devices. The lower part B of the casing is in this instance provided with a screwthreaded opening for the attachment of a supply-pipe. (Not shown.) From the supplychamber communication is had with the pislton-chamber at opposite sides of the latter through openings controlled by valves C and C, respectively. As shown, each valve C consists of a bodyc and a facing c', of leather or similar material, secured at the base of the piston-chamber by a clamping-piece c2. The'interior or working side surfaces of the pistonchamber are cylindric in form,i the pistonchamber being closed at the ends by suitable end plates extending transversely from the side portions of the cylinder.

D is the piston, comprising rectangular plates d d, here shown as formed integrally in one piece and radiating upwardly from the bottom surface of the piston-chamber. This piston is intended to have a vibratory movement in' the arc of a circle about an axis coincident with that of the cylindric inner surface of the piston-chamber. The bearing forming the support for the piston D in the present case is formed bythe convex surface of a longitudinal piece E, over which fits a Fig. 2 is a vertical cross-section of the corresponding longitudinal recess E at the bottom of the piston. This form of bearing or rmovable seat for the piston has the advantage that no cutting of the sides of the pistonchamber is necessary to support the piston, and consequently there is no leakage; and, furthermore, from the present construction and arrangement the removal of the piston from its chamber is more easily eected, it being simply necessary to disconnect the `.lower or supply chamber, whereupon the piston and its appurtenances will be lowered, and can readily be taken out for repair or for other purposes. Itis to be observed that the bearing-piece E is centrally mounted upon the division-plate K, which separates the piston and supply chambers, so that the disconnection of said latter chamber effects the lowering of the piston. If desired, however, the said supply-chamber may be made separate from the division-plate and the two separately removable', and thus the removal or disconnection of the supply-chamber would not of necessity effect the lowering of the piston. This same form of bearing or movable seat is easily adapted to vibrating pistons of other formthan that shown, vbut the construction shown is the preferred form of piston. It is evident that the construction of the longitudinal recess at the bottom of the piston and the longitudinal bearing-piece E could be simply reversed and still operate in substantially the same Way. These and other similar changes could of course be made and still be within the scope of my invention.

Packing-strips e are secured to the edges of the plates CZ d, forming the piston and bear against the inner surfaces of the pistonchamber. Each plate d is provided with a transverse opening d', controlled by a valve d2, whose general construction may be the same as already described with reference to the valves at the bottom of the piston-chamber.

F is a cross-brace extending between and secured to the outer edges' of the plates d d. It constitutes as .well an additional support for a rod G, secured at its extremity to the piston D and extending upwardly therefrom and providing means for effecting the necessary vibration to the piston. Said cross-brace also serves to hold the valve d2 d2 securely in IOO ' an inspection of Fig. 2.

place upon the upper surfaces of the plates, as shown. The upper port-ion of the casing A is out away and the edges of the opening extended upward by flanges g on three sides. The remaining edge of the opening is extended outwardly in the form of a discharging-spout g.

The operation of the pump is evident from When the piston D swings to the left, the liquid imprisoned in the piston-chamber at the left closes the valve C at the left and raises the valve (Z2, the liquid therefore passing above the piston in the direction of the'diseharge. At the opposite side of the piston-chamber the reverse operations are taking place, liquid being drawn into the piston-chamber, as shown by the arrow at the right. As the direction of movement of the piston changes, the several valves assume their opposite positions, resulting in a rise of the liquid to the dischargeopening and its ultimate discharge.

IIaving described my invention, what I consider as new, and desire to secure by Letters Patent, is-

The combination in a pump, of a piston chamber eylindric in form and having in its top a flanged discharge-openingand a spout, a removable supply-chamber having a top plate constituting the bottom of the pistonchamber and provided at opposite points with hinged valves opening into said pistonchamber, a convex bearing-strip extending diametrically across the top plate intermediate its valves, and a vibrating piston constituted of plates substantially equal to the radius of the piston-chamber and uniting with each other at an angle and each having an upwardly-opening valve, the said piston being provided on its upper side near the ends with a cross-brace, which secures the valves of the plates in place and having an operating-rod fastened at its lower end to the piston and passing through an opening in the center of the cross-brace, substantially as shown and for the purpose described.

In testimony whereof I have signed my name to this speciication in the presence of two subscribing witnesses.

HENRY S. IAOCKMAN.

Vitnesses:

J osErHUs VAN TAssELL, WM. MCKENZIE. 

